Home / 20,153.45-27,809.64-11,199.50

Finding the Fourth Proportional to 20,153.45, 27,809.64 and 11,199.50

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Solution

The fourth proportional to 20,153.45, 27,809.64 and 11,199.50 is: 15,454.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,153.45 : 27,809.64 = 11,199.50 : x
  2. Step 2: Convert to fraction form
    20,153.45/27,809.64 = 11,199.50/x
  3. Step 3: Cross multiply
    20,153.45x = 27,809.64 × 11,199.50
  4. Step 4: Simplify right side
    20,153.45x = 311,454,132.70
  5. Step 5: Solve for x
    x = 311,454,132.70/20,153.45
  6. Step 6: Final answer
    x = 15,454.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.